Question

我在头部使用了这个javascript，当我点击按钮时，它总是打开目标链接。在这里，我想打开一次链接

    <?php
    $onclick = '';
    if(!isset($_COOKIE['visited'])) {
        setcookie('visited', '1', time()+3600, COOKIEPATH, COOKIE_DOMAIN);
        $onclick = 'onclick="window.open(\'https://www.google.com\', \'_blank\')"';
    }
   ?>

用法

<body <?php body_class(); ?> <?php echo $onclick; ?>>

我完全检查了它的写入cookie，但没有工作......有什么解决方案可以解决这个问题吗？

Answer 1

您可以按以下方式编写JS代码

 /**
* For writing cookie
* @param name {String} name of the cookie
* @param value {*} value of the cookie
* @param days {Number} number of days
*/
function setCookie(name,value,days) {
var expires = "";
if (days) {
  var date = new Date();
  date.setTime(date.getTime() + (days*24*60*60*1000));
  expires = "; expires=" + date.toUTCString();
}
document.cookie = name + "=" + (value || "")  + expires + "; path=/";
}

/**
* Get cookie by a name
* @param name {String}
* @returns {*}
*/
function getCookie(name) {
 var nameEQ = name + "=";
 var ca = document.cookie.split(';');
 for(var i=0;i < ca.length;i++) {
  var c = ca[i];
  while (c.charAt(0)==' ') c = c.substring(1,c.length);
  if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
 }
return null;
}

/**
* Check for already redirected or not. If not then redirect to targeted site.
*/
function redirectToTarget() {
 var isAlreadyRedirected = getCookie('redirect');
 if (null === isAlreadyRedirected) {
  setCookie('redirect', 1, 30); // write for 1 month
  window.open('https://www.google.com');
 }
}

从body onclick调用js函数，如下所示

<body onclick="redirectToTarget()">

点击按钮多次打开Javascript链接

1 个答案: